Allen-Bradley Ultra3000 - Three-Phase Power Wired to Single-Phase Drives

Publication 2098-IN003E-EN-P — April 2004
3-6 Connecting Your Ultra3000
Three-Phase Power Wired to Single-Phase Drives
The following examples (figures 3.5 and 3.6) illustrate grounded
three-phase power wired to single-phase Ultra3000 drives when
phase-to-phase voltage is within drive specifications.
Figure 3.5
Single-Phase Amplifiers on Three-Phase Power (WYE)
1
AC line filter is optional, but is required for CE compliance.
2
Contactors (MI, M2, and M3) may be optional. For more information refer to Understanding the Machinery
Directive (publication SHB-900).
Note: Feeder short circuit protection is not illustrated.
Figure 3.6
Single-Phase Amplifiers on Three-Phase Power (Delta)
1
AC line filter is optional, but is required for CE compliance.
2
Contactors (MI, M2, and M3) may be optional. For more information refer to Understanding the Machinery
Directive (publication SHB-900).
Note: Feeder short circuit protection is not illustrated.
L1
L2
L3
TB1
L1
L2/N
TB1
L1
L2/N
TB1
L1
L2/N
L1
L2
L3
L1
L2
L1
L2
L1
L2
L1
L2
L1
L2
L1
L2
L2
L3
L1
E
E
E
Bonded Cabinet
Ground Bus
Transformer (WYE) Secondary
Ground Grid or
Power Distribution Ground
AC Line
Filter
1
AC Line
Filter
1
AC Line
Filter
1
Input Fusing
Grounded Neutral
Ultra3000 (System A)
Single-Phase AC Input
TB1 Terminals
Ultra3000 (System B)
Single-Phase AC Input
TB1 Terminals
Ultra3000 (System C)
Single-Phase AC Input
TB1 Terminals
Input Fusing
Input Fusing
M1
2
M2
2
M3
2
Ground Grid or
Power Distribution Ground
Bonded Cabinet
Ground Bus
L1
L2
L3
TB1
L1
L2/N
TB1
L1
L2/N
TB1
L1
L2/N
L1
L2
L1
L2
L1
L2
L1
L2
L1
L2
L1
L2
L2
L3
L1
L3
L1
L2
E
E
E
Bonded Cabinet
Ground Bus
Transformer (Delta) Secondary
Ground Grid or
Power Distribution Ground
AC Line
Filter
1
AC Line
Filter
1
AC Line
Filter
1
Grounded Neutral
Ultra3000 (System A)
Single-Phase AC Input
TB1 Terminals
Ultra3000 (System B)
Single-Phase AC Input
TB1 Terminals
Ultra3000 (System C)
Single-Phase AC Input
TB1 Terminals
Bonded Cabinet
Ground Bus
Ground Grid or
Power Distribution Ground
Input Fusing
Input Fusing
Input Fusing
M1
2
M2
2
M3
2